Challenge: filter, reduce, & sort | raywenderlich.com

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This is a companion discussion topic for the original entry at https://www.raywenderlich.com/5429279-programming-in-swift-functions-and-types/lessons/18
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Just FYI - sort wasn’t included in the challenge.

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Good catch! I’ll make sure to add sort into the next update :]

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I used
map { $0.key }

here, is it OK too, or the longer version is preferred?

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I’ve slowed down these videos to 50%, repeated watching them over and over. I’m so lost.

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Same! Im really confused. I don’t understand in the first challenge how (result, name) works? How does the compiler know what to assign result and name and why are even needed?